21431608

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{1019}}^1$

素因数の和:1275

約数の個数: 32

約数和(自身を含む): 44064000

約数和(自身を除く): 22632392

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 239, 478, 956, 1019, 1912, 2038, 2629, 4076, 5258, 8152, 10516, 11209, 21032, 22418, 44836, 89672, 243541, 487082, 974164, 1948328, 2678951, 5357902, 10715804, 21431608]

約数ペア:

[(1, 21431608), (2, 10715804), (4, 5357902), (8, 2678951), (11, 1948328), (22, 974164), (44, 487082), (88, 243541), (239, 89672), (478, 44836), (956, 22418), (1019, 21032), (1912, 11209), (2038, 10516), (2629, 8152), (4076, 5258)]